反应详情

温度

-15 °C

A solution of 2-propylmagnesium chloride in THF (1.3 M, 7.5 ml) was cooled to −15° C. and admixed with 1-iodo-3-(trifluoromethyl)benzene (2.80 g, 10.2 mmol). The reaction mixture was stirred at −15° C. for 1 h, warmed to room temperature and admixed dropwise with a solution of 2,2-difluoro-N-methoxy-N-methylpropanamide (1.43 g, 9.35 mmol: prepared according to Synth. Comm. 2008 (38), 1940-1945), and stirred at room temperature overnight. Then the mixture was added to ice-cold dilute hydrochloric acid and extracted with ethyl acetate. The combined organic phases were dried over sodium sulphate and concentrated under reduced pressure. The residue was purified by means of silica gel chromatography with the eluent cyclohexane/ethyl acetate (EA) (0% FA to 30% EA).

1. temperaturewarmed to room temperature
2. stirringstirred at room temperature overnight
3. additionThen the mixture was added to ice-cold dilute hydrochloric acid
4. extractionextracted with ethyl acetate
5. dry with materialThe combined organic phases were dried over sodium sulphate
6. concentrationconcentrated under reduced pressure
7. customThe residue was purified by means of silica gel chromatography with the eluent cyclohexane/ethyl acetate (EA) (0% FA to 30% EA)